The affidavit alleges that on Feb. 1, 2011, a chemical supplier reported to the FBI a suspicious attempted purchase of concentrated phenol by a man identifying himself as Khalid Aldawsari. According to the affidavit, phenol is a toxic chemical with legitimate uses, but can also be used to make the explosive trinitrophenol, also known as T.N.P., or picric acid. The affidavit alleges that other ingredients typically used with phenol to make picric acid, or T.N.P., are concentrated sulfuric and nitric acids.

And now some personal details. Aldawsari is a member on Facebook of varoius non-terrorist groups, including Zombie Outbreak Response Unit, Texas Tech University and Agatha Christy.